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(No Model.) 2 sheets-sheet-1- H. WYMAN. STOP MBGHANISM POR Looms..

No. 438,591. Patented 0013.14, 1890.

"E Ld (No Model.) 2 sners-sheet 2.

'E'. WYMAN.

STOP MBGHANISM FOB. -Looms.

No. 4381591. Patented-v Oct. 14, 1890.

IIIIIUUI UNITED STATES PATENT OFFICE. l

HORACE VYMAN, OF VORCESTER, MASSACHUSETTS, ASSIGNOR TO THE OROMPTON LOOM WORKS, OF SAME PLACE.

STOP MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 438,591, dated October 14, 1890.

Application filed March 27, 1890. Serial No. 345,533. (No model.)

.T0 all whom it may concern:

Be it known that I, HORACE VYMAN, of Worcester, county of Vorcester, State of Massachusetts, have invented an Improvement in Stop Mechanisms for Looms, of which the following description, in connection with the accompanying drawings, is a specification, like letters and figures on the drawings representing like parts.

This invention has for its object to provide a loom in which the power to drive itis transmitted through a friction or clutch pulley, with means whereby the said friction or clutch pulley will have its parts automatically disengaged to stop the loom Whenever the weft fails or the shuttle isnot properly boxed. To do this I have combined with the loom a short vertical rock-shaft connected by a connecting-rod to a clutch-moving lever. I have also connected to the said rock-shaft a second connecting-rod attached to a brake which is automatically applied to a brake-wheel when the friction or clutch pulley parts are separated. The said vertical rock-shaft has also connected to it a hand-rail by which the operator may open or separate the part-s of the friction or clutch pulley at will by hand from the front of the loom.

The particular features in which my in'- vention consists will be hereinafter described, and set forth in the claims at the end of this specification.

Figure 1 in side elevation represents asufiicient portion of an ordinary loom with my improvements added to enable my invention to be understood. Fig. 2 is a partial front elevation of the loom near the right-hand side thereof; Fig. 3, a partial top or plan view of the right-hand side of the loom, the said figure including part of the breast-beam; and Fig. 4 is a detail showing the lever f attached to the under side of the breast-beam.

The loom-frame A, the crank-shaft d, the gear j thereon, the gear t' engaged by it and fast on the lower cross or picking shaft b, the end of which is shown mostly in dotted lines in Fig. l, the bevel-gear f, the pulley-shaft e, and the rod s are and may be all as usual in power-looms, as, for instance, in United States Patent No. 265,659. The pulley b2, loose on the said shaft 'and adapted to be embraced and rotated by any usual belt, and the clutch sleeve or hub F at one side of the pulley and splined loosely to the said shaft, so that it may be slid thereon when it is desired to stop or start the shaft e, are and may be all as in United States Patent No. I363,507, May 24, 1887, to which reference may be had; but it is not intended to limit this invention to only the friction or clutch pulley shown, as many well-known equivalent forms of pulley may be employed instead.

To actuat-e the sleeve F of the friction or clutch pulley at the proper times, I have provided a lever d', forked at its lower end or having a pin to enter a groove f6 on the said sleeve, the lever being pivoted at d2 upon a stand d3, secured to the stand A at the loom side, said stand having bearings for the shaft e. The upper end of the lever CZ' has joined to it a rod d4, the forward end of which is joined to an arm d5 at the lower end of a vertical rock-shaft d6, held in a suitable sleevelike bearing cl2, supported at one end of the loom near the breast-beam A2. The drawings show the vertical rock-shaft and rod d4 in position to engage one part of the friction or clutch pulley with the other part, as When the loom 'is running regularly, and in Fig. 3 it will be seen that the joint 6 between the rod d4 and the arm d'is so located with relation to the center of the vertical rock-shaft to compel the said shaft to remain in such position until again positively rocked, the spring 7, connected to the collar dw, and the lug 8 aiding in keeping the said joint 6 past or across the center and retaining the rockshaft in the position shown in Fig. 2, or at one side or across its center. The rock-shaft d6 at its upper end has an arm d?, which is jointed by a link d8 to one end of a shipper or hand-rail C19, preferably of Wood, and extended across the loom in front of the breastbeam, the said rail being accessible by the operator in any position in front of the loom,

so that he may stop or start the loom as desired; but one end of the :rail Z9 is herein shown, but both ends are supported in like manner, as by a link d10, pivoted at C212, on a leg (Z13, connected to the breast-beam, there IOO being such a leg and link to support each end of the said bar. 'lhe rock-shaft d at its lower end is provided with a third arm or projection, as h,\vhicl1 is jointed to one end of a brake-rod h', jointed at h2 to a brake h3, piv-V oted at h4 on astand h5, the junction of the rods d* and 72, with the said arms of the said rock- V shaft being such that when the rock-shaft d is i turned to effect the engagement of the frictionpulley the brake Will not engage the brake- Wheel l0 connected to the Wheelj, and vice` versa. Whenever the hand-bar dg is moved inthe direction of the arrows in Figs. 2 and 3 the vertical rock-shaft d is movedin suchdirection as to move the pivot 6 towardthe loom side and cause the rod d4 to draw the upper end i oi' the lever d toward the loom-frame and effeet the release of Vthe loose 'pulley b2. The? stop-rod s is common to UnitedStates Pat-ent i No. 265,659, dated October '10, `1682, Where itf is designated by like letters. This rod s', i jointed at l2 `to the arm Z7 of `the rock-shaftL el, will in practice on the failure of the weft be moved automatically to the right, viewing 3j Fig. 2, by `or through any usual weft-feelerE and connections-such, forinstance, as shown in 'United States Pat-ent No. 364,163, dated May 3l, lSSZ-referred to, the said parts not;y shown containing an elboW-leveradapted'to act upon a collar on 'the said rod s to move it to the right, viewing Fig. 2, Whenever the weft fails to thus turn the said rockshait and'stop g the loom. The rock-shaft d 'also fhas upon it f an arm or projection 4, which, when the loom f is running properly, stands close to one end f of a leverf, pivoted at f2 at the under side ofthe breast-beam, the saidlever being acted 5 upon by a dagger m on the dagger-shaft on', i having a vertical arm to bear against the usual shuttle-binder, the absence of a shuttle from the usual shuttle-'box `When one should j. be present 'therein permitting the dagger to rise, strike the leverrf and cause it to act on the arm 4 and turn `the vertical rock-shaft d to eiec't the release of the belt-pulley B', as described, to stop the loom.

I claiml. The pulley-shaft, a pulley loose thereon, a co-'Qperatin'g clutch sleeve or hub onthe said shaft, and a leverfto move it, and the vertical rock-shaft having the arm d5 and projection 4, and a rod to connect the said lever and arm (Z5, combined with the lever f', the lay, and the dagger, to operate substantially as described.

2. The vertical rock-shaft having arms (Z7 and and projection 4, the rod d4 and lever d,the pulley-shaft, the loose pulley thereon, and the clutch-sleeve to move it, combined with means to turn the said vertical rockshaft, :and 'the spring 7,1it `operating to hold the said shaft, substantially as described.

3. The pulley-shaft, a pulley loose thereon, a co-operating sleeve or hub on the saidshaft to rotate saidpulley at vtimes,a lever'to move the hub, a vertical rock-shaft having arms d5 :and h, and a projection 4, and the crankshaft, the brake-Wheel, the'brake, the rod d to connectthe hub-moving lever and arm d, and the rod h to connect the projection 7L with the said brake,conibi'nedwiththe lever f', the lay, andthe dagger to turn the `rockshaft, free the loose pulley,.and put on ithe brak'e, substantially as described.

4. The vvertical shaft (l6,l1avingthe 'projec- :tion 4,.combined with the lever f', pivoted ibelow 'the breast-beam, the lay, 'and "the dag- ;ger-shafhand dagger, *t0 operate substantial] y las described.

5. The vertical rook-shaft provided with arms Z7 (Z5 and projection 4, the rods s and d4, ithe pulley-shaft, a'loose pulley thereon, and -sliding sleeve or hu-b, combined with `means intermediate the said rod d" and sleeve or ihub, and with the lever f', and means to actiuate the latter, substantially as described.

In testimonywhereof Ifhave signed' my name to this speciiicatimnin the presence of two subscribing Witnesses.

HORACE VYMAN.

Witnesses GEo. W. GREGORY, EMMA. J. BENNETT. 

